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  #1  
Old 08-14-2011
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DNA Composition of the double stranded product

A 3 year old boy is diagnosed with MCAD (medium chain acyl-CoA dehydrogenase ) deficiency and sample of DNA is obtained.
The base composition of one strand is analyzed and found to contain
A = 10
C = 12
G = 15
T = 8
What is composition of double stranded product

a) A=27 C=20 G=27 T=20
b) A=22 C=33 G=23 T=23
c) A=20 C=24 G=24 T=20
d) A=18 C=27 G=15 T=18
e) A=08 C=12 G=15 T=10
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  #2  
Old 08-14-2011
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The answer is d.
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  #3  
Old 08-14-2011
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shouldn't it be A = 18 C= 27 G =27 T =18 ?
please explain
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  #4  
Old 08-14-2011
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hmmm...... what about e) ?
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  #5  
Old 08-14-2011
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the ans is C in a double stranded DNA
A=T
C=G
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  #6  
Old 08-15-2011
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Correct Answer

Ccccccccccccccccc
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  #7  
Old 08-15-2011
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Quote:
Originally Posted by patient doctor View Post
shouldn't it be A = 18 C= 27 G =27 T =18 ?
please explain
Agree with you.
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  #8  
Old 08-15-2011
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A = 10 T=10
C = 12 G=12
G = 15 C=15
T = 8 A=8
What is composition of double stranded product

a) A=27 C=20 G=27 T=20
b) A=22 C=33 G=23 T=23
c) A=20 C=24 G=24 T=20
d) A=18 C=27 G=15 T=18 (G should be 27)
e) A=08 C=12 G=15 T=10
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  #9  
Old 08-15-2011
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Quote:
Originally Posted by IKR123 View Post
A 3 year old boy is diagnosed with MCAD (medium chain acyl-CoA dehydrogenase ) deficiency and sample of DNA is obtained.
The base composition of one strand is analyzed and found to contain
A = 10
C = 12
G = 15
T = 8
What is composition of double stranded product

a) A=27 C=20 G=27 T=20
b) A=22 C=33 G=23 T=23
c) A=20 C=24 G=24 T=20
d) A=18 C=27 G=15 T=18
e) A=08 C=12 G=15 T=10
Should be Answer C is the most reasonable to me, based on the Double Stranded Composition.

As we can see A = T = ( Hydrogen bonds )
G=C 24

Answer E is just the complementary strand for the single stranded DNA.
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  #10  
Old 04-04-2012
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so whats the answer and explanation???
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Old 04-04-2012
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shouldnt it be
A=18 T=18 C=27 G=27?
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  #12  
Old 04-04-2012
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agreed, answer is d) and G should be 27 (they forgot to add the complementary 12)
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